# MetelMaslow Z axis in WebControl

**URL:** <https://forums.maslowcnc.com/t/metelmaslow-z-axis-in-webcontrol/15933>\
**Category:** Troubleshooting\
**Created:** [January 26, 2021, 4:34pm UTC](https://forums.maslowcnc.com/t/metelmaslow-z-axis-in-webcontrol/15933 "2021-01-26T16:34:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Erik](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/erik/32/20409_2.png) [@Erik](https://forums.maslowcnc.com/u/Erik)\
**Post date:** [January 26, 2021, 4:34pm UTC](https://forums.maslowcnc.com/t/metelmaslow-z-axis-in-webcontrol/15933/1 "2021-01-26T16:34:11Z")

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Holey calibration just makes holes or ¼ inch deep pokes. The first time I tried the Holey Calibration the Z feed bottomed skipping teeth on the belt in both directions, but it made holes. I e-mailed the factory to find out what I was doing wrong to have my Z axis driving so far and I got suggested settings for the Z axis setup in GroundControl that worked much better. Specifically they suggested a pitch of 18 and an encoder setting of 5400, I don’t understand why as I don’t understand what GroundControl is doing with those numbers. I had used actual measured pitch or how much the router moves for one rev of the lead screw but the encoder number isn’t easily discerned so I accept the magic as it appears to work.

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**Author:** ![Blair](https://avatars.discourse-cdn.com/v4/letter/b/c37758/32.png) [@Blair](https://forums.maslowcnc.com/u/Blair)\
**Post date:** [January 27, 2021, 1:47pm UTC](https://forums.maslowcnc.com/t/metelmaslow-z-axis-in-webcontrol/15933/2 "2021-01-27T13:47:33Z")

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I don’t remember my encoder setting though it should be the default and my pitch is 26 on my Metal Maslow. I can’t vouch for mm accuracy because my material isn’t necessarily totally flat. My cuts are coming out +/-1mm even with the uneven surface.